Security in terms of "computer security", such as protection of information, protection from theft or data destruction.

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How to deny delete/modify permission to a file?

I want to deny myself the ability to modify or delete an executable. When .NET Reflector asks you if you want to update: and you choose No it spontaneously deletes itself as ...
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1answer
182 views

How to secure a laptop against thieves [duplicate]

Possible Duplicate: What are the possible ways for prevention of laptop theft? Hi ! I'm looking for some security hw/sw based solution for my laptop (non standard solution maybe? open the ...
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2answers
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Wireless network connection: Security Type: Unsecure

For some wireless network connections, Windows 7's connection choice menu shows a warning sign with text: information sent over this network might be visible to others. What does this mean? How risky ...
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2answers
6k views

How can I get my router and Inprocomm IPN2220 wireless network card connected?

Problem I can not connect to my Techniclan WAR-54G router's personal wireless network via my older Acer Travelmate 2300 XP Pro laptop that uses a InProComm IPN2220 wireless network card. However, ...
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0answers
60 views

Automate Interactive method of authentication for file transfer

Interactive method of authentication There is a server A and Server B Server A is the File Transfer server It has the files stored in it and we issue command scp admin@IP of REMOTE ...
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2answers
517 views

How can I locate my stolen Mac Book Air and Galaxy S4?

My car was broken in to, and both items have been stolen. I'm watching Dropbox, no activity. What else can I do?
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2answers
1k views

Change USB Model Name globally on the device

If I plug in my Kingston USB Stick, it automatically says KINGSTON DataTraveller 2G (or similar) in every OS. So I assume it is saved on the Stick. Is it possible to change this Description on the ...
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3answers
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How to secure a public computer?

We'll have a couple of laptops sitting at a table at a convention we're going to soon. We're not concerned about physical theft - the laptops will be physically secured, and there'll be someone ...
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6answers
997 views

Is it dangerous if you drop a metal object(like a screw) on a motherboard that is powered on?

I am not very good with electricity so I can only guess. So should i be careful with screws and stuff when the pc is on?
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1answer
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security block self-running java program

I'm running a java program, but it is blocked by security software(maybe McAfee), I got a pop-up which says: Application Blocked by Security settings your security settings have blocked a ...
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18answers
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How are pseudorandom and truly random numbers different and why does it matter?

I've never quite got this. Just say you write a small program in any language at all which rolls some dice (just using dice as an example). After 600,000 rolls, each number would have been rolled ...
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11answers
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How can I give my wife emergency access to logins, passwords, etc.?

I'm the digital guru in my household. My wife is good with email and forum websites, but she trusts me with all our important digital stuff — online banking and other things that require ...
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7answers
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How to use the Internet while Heartbleed is being fixed?

There are many websites who are not currently vulnerable, but I have no idea if they were vulnerable a few days ago. For example: twitter.com: Not vulnerable right now, but the certificate is from ...
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5answers
9k views

How do identify whether my Linux computer was hacked?

My home PC is usually on, but the monitor is off. This evening I came home from work and found what looks like a hack attempt: in my browser, my Gmail was open (that was me), but it was in compose ...
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5answers
55k views

How to password protect gzip files on the command line?

I want to create some tar.gz (and possibly tar.bz2) files, using the tar command on Ubuntu 10.04. I want to password protect the file. What is the command to do this (I have Googled, but found ...
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10answers
8k views

How to destroy a CD/DVD rom safely?

I have old CDs/DVDs which have some backups, these backups have some work and personal files. I always had problems when I needed to physically destroy them to make sure no one will reuse them. ...
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4answers
3k views

What are possible security issues with an SSH daemon?

I'd like to be able to SSH to my Ubuntu 10.04 office PC from the outside. I am thus thinking to start up an SSH daemon on the PC. What are the security issues, possible glitches, specific ...
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2answers
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Is it a bad idea to use the same private ssh key on multiple computers?

I recently bought a laptop from which I need to access the same remote hosts that I do from my desktop. It occurred to me that it might be possible to simply copy the private key file from my desktop ...
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8answers
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How to remove security from a PDF file?

I am trying to fill out some docs, but the provided PDFs are "SECURED", meaning I can't use FoxIt's typewriter tools. Is there any way to remove the security?
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3answers
14k views

Can other people on an encrypted Wi-Fi AP see what you're doing?

If you connect to an open, unencrypted Wi-Fi access point, everything you do can be captured by other people within range. If you connect to an encrypted point, then people nearby can intercept what ...
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4answers
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SSH: The authenticity of host <host> can't be established

What does this message mean? Is this a potential problem? Is the channel not secure? Or is this simply a default message that is always displayed when connecting to a new server? I am used to ...
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2answers
30k views

What is the difference between a proxy and a VPN?

There are several service providers out there that allow a user to circumvent firewalls or anonymize their web access. Some of them use proxies, some use VPNs. Most people say that VPNs usually work ...
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3answers
8k views

Why is SSH key authentication better than password authentication?

This isn't so much a technical question as it is conceptual. I understand the cryptography used in an SSH key is far stronger than a regular password, but I don't understand why it is considered more ...
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What are the guidelines for creation of a secure passwords?

What are the best practices to create secure passwords? I would like to make them tougher to crack with brute force tools. Part II Are there any tools that can generate these passwords so I do not ...
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4answers
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What are ways to prevent files with the Right-to-Left Override Unicode character in their name (a malware spoofing method) from being written or read?

What are ways to avoid or prevent files with the RLO (Right-to-Left Override) Unicode character in their name (a malware method to spoof filenames) from being written or read in a Windows PC? More ...
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2answers
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How big of a risk are popular Chrome extensions?

I'm about to switch to Chromium and I installed a couple of extensions. Each time I installed an extension I was notified of which data the extension has access to, e.g.: I do understand that ...
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2answers
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How can I detect unauthorized access on my 802.11 g/n network?

I am using a wireless network and I want to make sure that no unauthorized users are connecting through my access point. I am using the standard encryption the device supports. I know it is a ...
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1answer
568 views

“Panic Password” on Linux

I run Linux on my netbook with an encrypted home directory (decrypted when I log in). One idea I had (partly from Cory Doctorow's Little Brother) was to have a password that I could enter which would ...
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3answers
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Can Google Employees See My Passwords Saved in Google Chrome?

I understand that we are really tempted to save our passwords in Google Chrome. The likely benefit is two fold, You don't need to (memorize and) input those long and cryptic passwords. These are ...
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1answer
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How do I view the contents of a PFX file on Windows?

I have a PFX certificate file on my machine and I'd like to view the details before importing it. (The import utility doesn't actually tell you what the certificate is!). How do I view the details ...
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2answers
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fine-grained sudoers configuration (allowed commandline arguments)

is there a straight-forward way to allow a user to run (for example) /usr/bin/pacman -S -u as root, without allowing him to run /usr/bin/pacman -S -u some_package ? The line user ALL=(root) ...
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5answers
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Does NAT provide security?

I'm following discussions about the IPv4->IPv6 transition, and IPv6 doesn't seem to like NAT at all. I've always thought that NAT was helpful in v4 for some security, I know it doesn't really hide ...
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Is it Possible for Hackers to steal password stored in your Browser

I was just wondering if XP passwords can be hacked then why cant a Hacker just hack my passwords stored in my browser. Is it possible for someone to know my browser saved password while I surf the ...
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10answers
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VPN for a small organization

I am in charge of a small office network that has < 10 users. I want to be able to offer them access to the network from their home internet connections. At the moment we have a regular ...
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3answers
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Running without admin rights: As users, what can we do to get apps working (that demand admin rights)?

I was prompted to ask this because of following question: Why does the majority of people in the Windows world still appear to not get that working as admin is plain stupid? We all know, deep down, ...
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3answers
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What are reasons to disallow ICMP on my server?

An EC2 Instance has ICMP services disabled by default. While it's not totally clear to me why, I think it's because it could be a potential security risk. At the moment I'm enabling Echo Responses ...
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3answers
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Windows XP Mode Vulnerabilities as of April 8th, 2014

EDIT I appreciate the answers I've gotten so far, but I might not have worded the question clearly enough. Is the Windows 7 side of the machine running in XP Mode exposed to any dangers it would ...
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putty 0.61 : why do I see “Access Denied” message after I enter my login id?

I use putty to login to my RHEL 5.3 server. I'm prompted to enter my login as "login as " and I enter my login Id. as soon as I press ENTER, I see a "Access Denied" message following which I'm ...
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10answers
725 views

Is email encryption practical enough?

All emails I have ever sent were sent as plain text. Like postcards, everybody on the way to the addressee could easily read and store them. This worries me. I know privacy is something of the past, ...
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5answers
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Is there a point to using theft tracking software like Prey on my laptop, if you have login security?

Hey, so I have a Thinkpad that I use in a variety of places (coffee shops, work, etc.). I don't generally abandon it, but I figure there's a chance I might get careless and it gets stolen at some ...
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8answers
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Firefox: This connection is untrusted + Behind corporate firewall

I've seen some similar issues strewn throughout Google's results about this, but none seem to be corporate-specific. I continually get the 'This connection is untrusted' screen every time I attempt ...
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3answers
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Worms vs Virus what's the difference? [closed]

I don't understand very well the difference between viruses ans worms, it seems that worms don't need any host to duplicate himself. But somebody can explain it? It means that a worm IS a soft? and ...
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3answers
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Windows Firewall: Logging/Notifying on outgoing request attempts

I'm trying to configure Windows firewall with Advanced Security to log and tell me when programs are trying to make outbound requests. I previously tried installing ZoneAlarm, which worked wonders for ...
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6answers
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Windows 7 never remembers my password credential

Every time I need to connect to something in my company I get a dialog like this So I type in my password(this can popup when I am in IE 9 or outlook or whatever.) and check the box. Say I am in IE ...
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6answers
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How can visiting a webpage infect your computer?

My mother's computer recently became infected with some sort of rootkit. It began when she received an email from a close friend asking her to check out some sort of webpage. I never saw it, but my ...
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3answers
5k views

Do I need to have a passphrase for my SSH RSA key?

Before I started at my current job (at a small business), my office had no firewall on the network and literally nothing was ever being backed up. Now that I've signed on as a dedicated sysadmin / ...
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2answers
5k views

How to find out when a disc (DVD) has been written/burned?

Is there a way/tool to determine the date and time when a disc has been written/burned with high certainty? This is about data forensics and should be a solid proof. I already tried IsoBuster, but it ...
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1answer
925 views

How to “jail” Java applications in OS X?

Is it possible to "jail" Java applications? My bank has an applet that requests "unrestricted access" to my computer. That makes me feels very uneasy. There should be a way to tell the java ...
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2answers
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Is it okay to use an administrator account for everyday use if UAC is on?

Since I switched to Windows 7 about 3 years ago, and now using Windows 8.1, I have become familiar with the concept of User Account Control and used my PC the following way: a standard account which I ...
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3answers
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Disable Windows 7’s “Open File - Security Warning” dialog for exe on local drive?

I am trying to run Eclipse java-galileo-SR2-win32 when I get open-file-security-warning. The files are just extracted from a zip file and put into a directory ...